Lee White
Go to Cornell University Library and search for the " Offical Records " The War of the Rebellion.Search for General Preston Smith.You will find he is reported in the Series and Volumes listed below.
Series 1 volume 16 Part I
Series 1 volume 16 Part II
Series 1 volume 23 Part II
Series 1 volume 30 Part II
Series 1 volume 30 Part III
In the last series shown above, the following report is
recorded..
" General Preston Smith was killed last night at 7:30 o'clock while leading a brigade within a few yards of the enemy's lines."...Chickamauga: Isham G. Harris report of Sept. 20, 1863 at 9:00 P.M.
Hope you get the time to read the above reports.A lot of information there in these 5 volumes and 10 pages.
Best Regards Donald Wall